I need some expert knowledge!!!
Took the suction nozzle out this past weekend and needless to say it SUCKED!(no pun intended)

We have a pump running 9000GPH(tested an confirmed)
-2" feed (20ft)
-3" return (15ft)
We have LITTLE if not ZERO suction once we drop below the level of the highbanker.
It is really weird, because if we pick the nozzle up out of the hole, and keep it LEVEL, or above the highbanker it has VERY GOOD suction. I dont know what it is??
Could the 1.25" JET at the front of the nozzle be TOO big, thus not creating enough suction from the venturi? Or, could it be 3" is just too large? Here are a few pictures to show what I am talking about

And a few from our trip

